diff --git a/src/HwmonTempMain.cpp b/src/HwmonTempMain.cpp
index 943443d..96eab9b 100644
--- a/src/HwmonTempMain.cpp
+++ b/src/HwmonTempMain.cpp
@@ -166,7 +166,7 @@
         // Relative Humidity are read in milli-percent, we need percent.
         tmpSensorParameters.scaleValue *= 0.001;
         tmpSensorParameters.typeName = "humidity";
-        tmpSensorParameters.units = "PercentRH";
+        tmpSensorParameters.units = sensor_paths::unitPercentRH;
     }
     else
     {
diff --git a/src/SensorPaths.hpp b/src/SensorPaths.hpp
index e2475fa..8524400 100644
--- a/src/SensorPaths.hpp
+++ b/src/SensorPaths.hpp
@@ -27,6 +27,8 @@
 constexpr const char* unitCFM = "xyz.openbmc_project.Sensor.Value.Unit.CFM";
 constexpr const char* unitPascals =
     "xyz.openbmc_project.Sensor.Value.Unit.Pascals";
+constexpr const char* unitPercentRH =
+    "xyz.openbmc_project.Sensor.Value.Unit.PercentRH";
 
 std::string getPathForUnits(const std::string& units);